WSDOT Projects

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Alaskan Way Viaduct and Seawall Replacement - Timeline

The information below highlights important program decisions and when action may be taken. Program History provides a more detailed description of past milestones.

Visit Current Work for a list of current inspection and construction activity.


Program Timeline
 
2001  Nisqually earthquake shook Puget Sound 
Viaduct and seawall replacement project began
 
2002 Replacement conceptual engineering began
 
2003 Environmental review alternatives selected
 
2004 Draft Environmental Impact Study (EIS) released
Tunnel selected as preferred alternative
 
2005 Alternatives designed
 
2006  Supplemental Draft EIS released
 
2007 Moving Forward projects began
 
2007 - 2008 Columns strengthened between Columbia Street and Yesler Way
 
2008 Evaluate options for the viaduct’s central waterfront section
 
2008 - 2009 Electrical line relocation
 
2009 - 2011

TBD		 North end construction - Battery Street Tunnel upgrades
North end construction - Lenora Street to Battery Street Tunnel
 
2009 - 2012 South end construction - South Holgate Street to South King Street
 
2009 - 2012 Transit enhancements and other improvements to keep people and goods moving during construction of the Moving Forward projects
 
2012  Begin removing the central portion of the viaduct


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